autotest: Combine tests for odd WPA passphrases into a new test

TEST=This is a test.  It passes
BUG=chromium:259487

Change-Id: Ia9a4ab9b76cb4fd284293ef417398268ad1e76d7
Reviewed-on: https://gerrit.chromium.org/gerrit/61683
Tested-by: Christopher Wiley <wiley@chromium.org>
Reviewed-by: Paul Stewart <pstew@chromium.org>
Commit-Queue: Christopher Wiley <wiley@chromium.org>
5 files changed